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Noob Fuel Question!

Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel? Thanks!

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Old 02-07-2010, 11:21 PM   #1 (permalink)
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Default Noob Fuel Question!

Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel?

Thanks!
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Old 02-07-2010, 11:25 PM   #2 (permalink)
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Our engines are designed to run on premium fuel. The higher octane rating means a higher resistance to premature detonation. I run 93, but some states offer only 91 as the highest octane and that will work.

If for some reason you have to put 87 in the car, go very easy on the revs as you don't want any pinging, and refill with high octane as soon as possible.
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Old 02-07-2010, 11:29 PM   #3 (permalink)
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Originally Posted by m4a1mustang View Post
Our engines are designed to run on premium fuel. The higher octane rating means a higher resistance to premature detonation. I run 93, but some states offer only 91 as the highest octane and that will work.

If for some reason you have to put 87 in the car, go very easy on the revs as you don't want any pinging, and refill with high octane as soon as possible.
Is it not true that you would want to use 91 for pure performance though??? I know 93 is better on the engine however my understand is that the lower octane you CAN use in your car the more performance you will receive from the engine.

I could be totally wrong
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Old 02-07-2010, 11:32 PM   #4 (permalink)
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Do you guys always put premium fuel in the 370Z? What happens if you put the regular basic fuel?

Thanks!
The engine will esplode if you put anything less than 91octane in.
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Old 02-07-2010, 11:34 PM   #5 (permalink)
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The engine will esplode if you put anything less than 91octane in.
It'll esplode yo!
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Old 02-07-2010, 11:37 PM   #6 (permalink)
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Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?
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Old 02-07-2010, 11:38 PM   #7 (permalink)
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Is it not true that you would want to use 91 for pure performance though??? I know 93 is better on the engine however my understand is that the lower octane you CAN use in your car the more performance you will receive from the engine.

I could be totally wrong
You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.
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Old 02-07-2010, 11:38 PM   #8 (permalink)
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Originally Posted by Hugoneus View Post
Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?
Well yes... you will blow up the engine with 87... premature detonation = bad!
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Old 02-07-2010, 11:39 PM   #9 (permalink)
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Originally Posted by kannibul View Post
You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.
+1

RTFM... Nice!!!
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Old 02-07-2010, 11:39 PM   #10 (permalink)
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Originally Posted by Hugoneus View Post
Haha... I don't want the engine to esplode.

But all joking aside, beside performance, is there any reason not to put the cheapest basic gas in it?
I'm not joking. It will explode in the engine. It won't burn, it will explode.

It's called detonation, which is bad for an engine.
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Old 02-07-2010, 11:40 PM   #11 (permalink)
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He wasn't really joking. Don't use anything under 91... the engine is not made for it.

The hole idea behind the octane level is:

The higher the octane level the more pressure that will build before the fuel ignites. If not enough pressure builds your engine will basically misfire… It wont sounds very good.
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Old 02-07-2010, 11:42 PM   #12 (permalink)
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Ok, I understand now. Curse expensive fuel! Curse it to hell I say!
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Old 02-07-2010, 11:42 PM   #13 (permalink)
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Originally Posted by kannibul View Post
You are totally wrong, and 93 is not better.

Octane rating has everything to do with how slowly the fuel burns and how resistant it is to detonating under compression. Higher octane = slower burn/more resistant.

This is compensated by advancing the timing. The car is "programmed" to use 91 octane fuel, meaning the advanced timing is already active. Using higher octane gas yeilds no benefit as the car can't detect higher rated fuel. *(this is true of all vehicles!)

If the car detects knock, (either by detonation or by the fuel burning too quickly/early by using under-91 octane fuel), the car WILL retard the timing and enrichen the fuel map until the condition is minimized.

That said, it says PLAIN AS DAY in the manual to use 91 octane (or higher) gasoline (again, not because higher octane gas will increase performance, but because it's safer in the sense that it's less likely to knock/detonate), but in case of emergency you can use 87/89 octane, but do not fill the tank, do not drive the car "hard", and fill the tank with 91 as soon as it is available.

So, RTFM.


OK WOW WOW WOW WOW

Is that not what I said??? Because thats what I meant...

93 would burn cleaner IE be better for the engine... 91 WILL GIVE YOU BETTER performance...


No????
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Old 02-07-2010, 11:43 PM   #14 (permalink)
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Ok, I understand now. Curse expensive fuel! Curse it to hell I say!
Blame it on Lindsay Lohan, that bitch!
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Old 02-07-2010, 11:43 PM   #15 (permalink)
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Heres a thread on this topic, a simple search is all it took!!!!
What type of fuel do you put in?
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